John Marcus has interned for Andy Cheung, former menswear designer, the Head of Made-to-Measure from Savile Row, London, menswear columnist, and owner of Suit Artisan.
 
John Marcus has assisted with daily operations, client services, photography, and fashion illustration. 

He had the opportunity to broaden his knowledge of menswear and bespoke tailoring despite womenswear being his strong suit. He also learned more about graphic design by creating a catalog for the brand for customers to view. This acquired him to understand more about tailoring and draping to prepare for his future designs as a designer.